Agitator



M. M. FRI IDEL AND w. BOSANKQ. AGITATOR.

APPLICATION FILED JAN- 6| 922.

1,415,830, 7 Patented May 9, 1922.

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MICHAEL M. FREDEL AND \VILLIAIVI BOSANKO, CI]? BROOKLYN, NEW YORK.

AGITA'IOR.

Application filed. January 6, 1922.

'1 0 all whom it may concern:

Be it known that we, MICHAEL M. FRETIEL and l vILLL-iM Bosannio, bothcitizens of the U 1" States, and residents, respectively, of the boroughof Brooklyn, county of Kings, city and State of New York, and RichmondHill, borougl'i of Queens, city and State of New York, have invented anImprovement in agitators, of which the following is a specilication.

This invention relates to an agitator adapted for use in mills forsuccessively turning over and bringing to the surface particles of flouror other substances in order to bleach the same by causing the particlesthus continuously brought to the sur- :lace to eomingle with a suitablegas. This form of apparatus is particularly shown and described inLetters Patent granted to us on July 5, 1921, under No. 1,383,921; Inthe apparatus there is employed a plurality oi: conical members over andthrough which, after the flour or other material has been caused toassume a completely closed hollow wall formation, the same caused topass and to be maintained in this hollow closed wall formation duringthe agitating and bleaching process. In the use of this apparatus wehave found that the flow of the flour or other material may be made moreuniform and a wall of substantially the same thickness be maintained bycausing those parts of predetermined deflectors through which thematerial is caused to flow to assume an inwardly turned and preferablycurved :lormation to prevent the mate rial, such as hour for (BXEtUlPlG,from. hecumulating or becoming thicker that is passing in a wall oi?greater thickness at these points than at others in itsdescent throughthe apparatus, and the present invention relates to these detailimprovements which will be hereinafter more particularly described.

In the drawing:

Fig. 1 is a longitudinal section and diagrammatic elevation of theagitator apparatus comprising our present invention.

Fig. 2 is a similar view taken at right angles to the position of theparts as shown in Fig. 1 and illustrating the manner in which theconical deflectors are srmported, and

-Fig. 3 is an enlarged partial cross section showing one of: thedeflectors forming part oi the improvements in the present case.

Specification of Letters Patent.

Serial No. 527,475.

Referring to the drawing, the agitator made in accordance with ourpresent invention preferably comprises a casing 10 which, as will beunderstood, may be made of any suitable material and in any elongatedcori figumtion. The casing is mounted upon a support 11 and providedwith a top 12 in order to comprise an entirely closed compartment.Leading to the top 12 is a chute 13 through which the material to be agitated and bleached or otherwise treated is conveyed to the agitator. Inthis chute there may be provided a door 14: and similarly in the top ofthe casing there may be a. door 15. Obviously also,the side walls oi theo2 may be fitted with doors it necessary.

Within the casing and at the top thereof. we employ a hopper or deliverycone 16; This it fitted with arms 1'? bearing upon supports 18 mountedon the walls of the casing so that the hopper or delivery cone it} maybe adjusted universally to substantially any position within definedlimits laterally in the casing is shown and described in the LettersPatent aforesaid.

IVithin the casing there is a cross bar 19. This is suitably fixed inthe walls of the casing and provided with a centrally disposed hub 20 inwhich there is mounted a vertical rod or support 21. At the top of thisred 21 and immediately beneath the delivery hopper is a conicaldeflector 22. This conical deflector is fitted with a frame 23 havinghub 2i through which the rod 21 passes, and the deflector 9.5;! may beadj ustedto position on the rod l1 and secured in pl ce thereon by a setscrew 25 or otherwise. This conical deflector is employed to cause theflour as it passes over the same to evenly divide and as it leaves thecone to assume a hollow wall formation. This is possible, as will beunderstood, by suitably adjusting the hopper or delivery cone 16. Alsoon the rod 21 there is adjustably mounted a conical de Hector 26. Thisis provided with a trame 27 having a hub 28 through which the {rodpasses and by means of a set screw 29 the deflector 26 may be secured tothe rod in any adjusted position. Vi e also employ a conical deflector30 having a cylindrical neck 31. This is placed near the bottom of therod 21, and like the deflectors hereinbefore described is fitted with aframe 82 having a hub 33 through which the rod passes and by means of aset scre v 34 the deflector 30 and its neck 31 may be secured in anyadjusted position on the rod. The outer surface of this deflector at thejunction between the conical and cylindrical surfaces is preferablycurved as indicated in the drawing to prevent the accumulation or pilingup of the flour or other material upon the surface of the deflector asin some instances occurs when a deflector such as is shown in theLetters Patent aforesaid is employed. y

In this invention we also employ a series of rods 85, 36 secured invertical positions adjacent the walls of the agitator by means ofbrackets 37, 38 respectively, or otherwise, these rods and 36 beingemployed to support the other series of conical deflectors to whichreference will now be made. The uppermost of the intermediate series ofconical deflectors is indicated at 39. In the apparatus shown anddescribed in our Letters Patent aforesaid the walls of this member aremerely conical. e have found, however, in practicing the invention thatas the flour or other material flows from the cone 22 into the conicaldeflector 39 there is a tendency at those portions of the inner surfaceof the deflector 89 at which the flour strikes the same for the flour toaccumulate or to pile up and therefore to prevent the otherwise evenflow of the material and the maintenance of its completely closed hollowwall conformation with a uniform thickness of the wall of the material.o have found also that this difliculty may be overcome by providing theupper portion of this deflector with an inwardly turned flange 40 andmaking the inner surface at the junction between these parts a curvedsurface as is illustrated in the drawing. The deflector 39 is otherwisesimilar to that shown in the Letters Patent aforesaid and is providedwith a series of arms or r brackets 41 through which the rods and 36pass, and by means of set screws 41 or otherwise the deflector 39 may beadjustably fixed in position. The intermediate deflector 43 is in allrespects similar to the corresponding part as described in the LettersPatent aforesaid and is fitted with a series ofarms or brackets 44 whichenable the operator to adjust the deflector to position on the rods 35and 36 and to secure the same inplace by the set screw 45 or otherwise.The deflector 46 is also similar to the corresponding part shown in theLetters Patent aforesaid and is adjustably mounted on the rods 35 and 36by the arms or brackets 4'7 and secured in position thereon by the setscrew 48.

In the bottom of the casing adjacent the base, we preferably employ ahopper 49 by \which the flour or other material after having beensuitably agitated and bleached may pass from the apparatus. Also asindicated in the drawing suitable pipes 50 and 51 may be employed forsupplying the gas or other bleaching agent which may be used inconjunction with the apparatus.

We claim as our invention:

1. An agitator in which the material to be treated is caused to assume ahollow completely closed wall formation, comprising a delivery hopper, aplurality of conical deflectors over which the material passes, aplurality of conical deflectors through which the material passes, andan inturned flange providing an inner curved surface associated with oneof the said deflectors through which the material passes.

2. An agitator in which material to be treated is caused to assume ahollow com-' pletely closed wall formation, comprising a hopper, aplurality of deflectors through which the material passes, and aplurality of deflectors over which the material passes and one of whichis provided with a cylindrical neck.

3. An agitator in which material to be treated is caused to assume ahollow completely closed wall formation, comprising a conical hopper, aplurality of deflectors through which the material passes, and aplurality of conical deflectors over which the material passes and thelower one of which is provided in its upper portion with a cylindricalneck.

4. An agitator in which material to he treated is caused to assume ahollow completely closed. wall formation, comprhiing a conical hopper, aplurality of conical deflectors over which the material passes and thelower one of which is provided with a cylindrical neck in its upperportion, and a plurality of conical deflectors through which thematerial passes and. the upper one 1 of which has its upper ed gc turnedinwardly and the inner surface between the flange and the deflectorcurved.

Signed by us this 28th day of December, 2

MICHAEL M. FREDEL. WILLIAM BOSANKO.

